/**
 *    Copyright ${license.git.copyrightYears} the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.plugins;

import static org.mybatis.generator.internal.util.StringUtility.stringHasValue;
import static org.mybatis.generator.internal.util.messages.Messages.getString;

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.mybatis.generator.api.PluginAdapter;
import org.mybatis.generator.api.IntrospectedTable;

/**
 * This plugin demonstrates overriding the initialized() method to rename the generated example classes. Instead of
 * xxxExample, the classes will be named xxxCriteria
 * 
 * This plugin accepts two properties:
 * <ul>
 * <li><tt>searchString</tt> (required) the regular expression of the name search.</li>
 * <li><tt>replaceString</tt> (required) the replacement String.</li>
 * </ul>
 * 
 * For example, to change the name of the generated Example classes from xxxExample to xxxCriteria, specify the
 * following:
 * 
 * <dl>
 * <dt>searchString</dt>
 * <dd>Example$</dd>
 * <dt>replaceString</dt>
 * <dd>Criteria</dd>
 * </dl>
 * 
 * 
 * @author Jeff Butler
 * 
 */
public class RenameExampleClassPlugin extends PluginAdapter {
  private String searchString;
  private String replaceString;
  private Pattern pattern;

  /**
     * 
     */
  public RenameExampleClassPlugin() {
  }

  public boolean validate(List<String> warnings) {

    searchString = properties.getProperty("searchString"); //$NON-NLS-1$
    replaceString = properties.getProperty("replaceString"); //$NON-NLS-1$

    boolean valid = stringHasValue(searchString) && stringHasValue(replaceString);

    if (valid) {
      pattern = Pattern.compile(searchString);
    } else {
      if (!stringHasValue(searchString)) {
        warnings.add(getString("ValidationError.18", //$NON-NLS-1$
            "RenameExampleClassPlugin", //$NON-NLS-1$
            "searchString")); //$NON-NLS-1$
      }
      if (!stringHasValue(replaceString)) {
        warnings.add(getString("ValidationError.18", //$NON-NLS-1$
            "RenameExampleClassPlugin", //$NON-NLS-1$
            "replaceString")); //$NON-NLS-1$
      }
    }

    return valid;
  }

  @Override
  public void initialized(IntrospectedTable introspectedTable) {
    String oldType = introspectedTable.getExampleType();
    Matcher matcher = pattern.matcher(oldType);
    oldType = matcher.replaceAll(replaceString);

    introspectedTable.setExampleType(oldType);
  }
}
